US6093271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tires with colored indicia
Assignee: Goodyear Tire and Rubber Co
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Filing: 1998-06-04
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Granted: 2000-07-25
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Expires: 2018-06-04
Abstract
Abstract This invention relates to a vulcanized rubber substrate such as, for example, a tire and a colored, crosslinked, non-black, non-staining, opaque, rubber composition layer therein such as, for example, a colored sidewall. In one preferred embodiment, the invention relates to such a tire wherein said white sidewall is partially colored with a contrasting color prior to vulcanization. The color is desirably applied after mixing with a plasticizer for the white sidewall composition. During vulcanization the color penetrates and colors the visible portion of the white sidewall composition.
Inventors
- 👤 Ramendra Nath Majumdar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:34
CPC Classifications
B; B60; B60C; B60C13/00; B60C13/001; B29; B29D; B29D30/00; B29D30/06; B29D30/72; B29D2030/726
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
145 words
A process for coloring an opaque non-black rubber component of a pneumatic tire, said process comprising: a) compounding and mixing a non-black rubber compound including at least 50 PHR of a copolymer having at least 50 weight percent repeating units from a monoisoolefin of 4 to 7 carbon atoms; b) applying a dye mixed with at least one low molecular weight rubber plasticizing additive, wherein said additive is a liquid, at temperatures in the range of about 20° C. to about 120° C., to at least one external surface of said rubber compound prior to curing said rubber compound to form a colored rubber compound substantially without the use of a volatile organic solvent; c) assembling said colored rubber compound into an uncured pneumatic tire; and d) molding and crosslinking said pneumatic tire thereby producing a tire with at least one colored non-black rubber component.
Claim 2
Dependent Claim
145 words
A process for coloring an opaque non-black rubber component of a pneumatic tire, said process comprising: a) compounding and mixing a non-black rubber compound including at least 50 PHR of a copolymer having at least 50 weight percent repeating units from a monoisoolefin of 4 to 7 carbon atoms; b) applying a dye mixed with at least one low molecular weight rubber plasticizing additive, wherein said additive is a liquid, at temperatures in the range of about 20° C. to about 120° C., to at least one external surface of said rubber compound prior to curing said rubber compound to form a colored rubber compound substantially without the use of a volatile organic solvent; c) assembling said colored rubber compound into an uncured pneumatic tire; and d) molding and crosslinking said pneumatic tire thereby producing a tire with at least one colored non-black rubber component.
Claim 3
Dependent Claim
24 words
A process according to claim 1, wherein said dye is mixed with either a plasticizer for a rubber, or a wax, or combinations thereof.
Claim 4
Dependent Claim
26 words
A process according to claim 2, wherein a black rubber coverstrip is applied over said colored rubber compound before it is assembled into a pneumatic tire.
Claim 5
Dependent Claim
144 words
A process for coloring an opaque non-black rubber component of a pneumatic tire, said process comprising; a) compounding and mixing an opaque non-black rubber compound including at least 50 PHR of a copolymer having at least 50 weight percent repeating units from a monoisoolefin of 4 to 7 carbon atoms and a sufficient amount of white pigment to make the rubber compound opaque; b) applying a dye mixed with either a plasticizer for a rubber or a wax, or combinations thereof, to at least one external surface of said rubber compound prior to curing said rubber compound to form a colored rubber compound substantially without the use of a volatile organic solvent; c) assembling said colored rubber compound into an uncured pneumatic tire; and d) molding and crosslinking said pneumatic tire thereby producing a tire with at least one opaque non-black colored rubber component.
Claim 6
Dependent Claim
144 words
A process for coloring an opaque non-black rubber component of a pneumatic tire, said process comprising; a) compounding and mixing an opaque non-black rubber compound including at least 50 PHR of a copolymer having at least 50 weight percent repeating units from a monoisoolefin of 4 to 7 carbon atoms and a sufficient amount of white pigment to make the rubber compound opaque; b) applying a dye mixed with either a plasticizer for a rubber or a wax, or combinations thereof, to at least one external surface of said rubber compound prior to curing said rubber compound to form a colored rubber compound substantially without the use of a volatile organic solvent; c) assembling said colored rubber compound into an uncured pneumatic tire; and d) molding and crosslinking said pneumatic tire thereby producing a tire with at least one opaque non-black colored rubber component.
Claim 7
Dependent Claim
26 words
A process according to claim 4, wherein a black rubber coverstrip is applied over said colored rubber compound before it is assembled into a pneumatic tire.
Claim 8
Dependent Claim
22 words
A process according to claim 4, wherein said white pigment is TiO 2 present in an amount of at least 20 PHR.
Claim 9
Dependent Claim
51 words
A process according to claim 4, wherein opaque is defined as having less than a 2% change in the L value of a 1 mm thick specimen according to CIE 1976 L* scale when a black backup plate is substituted for a white backup plate for the sample in the test.
Claim 10
Dependent Claim
51 words
A process according to claim 4, wherein opaque is defined as having less than a 2% change in the L value of a 0.5 mm thick specimen according to CIE 1976 L* scale when a black backup plate is substituted for a white backup plate for the sample in the test.
Claim 11
Dependent Claim
24 words
A process according to claim 4, wherein the dye forms a dye penetration layer by only penetrating partially through said opaque non-black rubber component.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-07-25 | 2004-01-24 | 2004-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-07-25 | 2008-01-24 | 2008-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-07-25 | 2012-01-24 | 2012-07-25 | $7700.00 | Window Closed / Lapsed |